Converting a 4-lug vehicle to a 5-lug setup offers several advantages, from increased wheel and tire options to improved braking and handling. While wheel adapters exist, a more robust solution involves swapping components for a complete and reliable conversion. This guide outlines the necessary steps and parts required for a successful 4-lug to 5-lug conversion using readily available Ford and aftermarket parts, focusing on the 1965-1966 Mustang as a donor vehicle.
Leveraging 1965-1966 Mustang Parts for Conversion
The 1965 and 1966 V8 Mustangs provide a comprehensive parts source for a 5-lug conversion, especially for vehicles like Falcons and Comets sharing similar underpinnings. This conversion not only changes the lug pattern but can also significantly upgrade braking and handling performance.
Front Suspension Components for 5-Lug Conversion
The core of the front suspension conversion lies in replacing the existing 4-lug components with their 5-lug counterparts from the donor Mustang.
Spindles
Begin with the spindles, the foundation for the entire brake and wheel assembly. Source original V8 Mustang drum or disc brake spindles from a 1965 or 1966 model. Aftermarket Granada disc brake conversion spindles, designed for these Mustangs, also offer a performance-oriented alternative with correct steering geometry.
Brakes
With the spindles in place, select compatible braking components. This can range from stock 5-lug Mustang drum or disc brakes to the aforementioned Granada disc brake setup if using aftermarket spindles. Ensure all components align with the chosen spindle type.
Steering Linkage
Accurate steering is crucial. Utilize the stock V8 Mustang tie rod center link from a 1965 or 1966 model. For Falcons and Comets, however, employ the 1965 Falcon V8 tie rod center link due to length differences. Additionally, incorporate inner and outer tie rod ends from the donor Mustang. Mustang Steve’s tie rod end bushings provide enhanced durability.
Idler Arm and Pitman Arm
Complete the steering system overhaul with the stock V8 Mustang idler arm and its corresponding mounting bracket, along with the stock V8 Mustang Pitman arm. All these parts should come from a 1965 or 1966 Mustang.
Rear Axle Conversion
For the rear, a direct bolt-in swap involves using the stock V8 1965 or 1966 Mustang 8-inch rear axle. Alternatively, consider having a custom 8 or 9-inch rear axle fabricated for a precise fit and potential performance enhancements.
Conclusion
Converting from a 4-lug to a 5-lug wheel setup is a significant undertaking, but by leveraging the readily available parts from 1965-1966 V8 Mustangs, the process becomes more manageable. This comprehensive upgrade not only expands wheel and tire choices but also enhances braking and handling capabilities, resulting in a more robust and performance-oriented vehicle. Remember to consult specific vehicle resources and professional advice for your application to ensure a safe and successful conversion.
